NIT NO. 12 (2025-2026) EE(SDW)VI/ ITEM NO.01

Dismantling of existing Damaged Bar-screen installed at 20 / 40 MGD SPS Keshopur Arrangement of all safety equipment for the protection of staff to work at height and to make the working area free from all toxic gases and free from accident during working at site as per NHRC guidelines,

Dismantling and removing the worn out and damaged M.S Structure and elements for the screen cutting and removing the support ing M.S. channels plates and Angles ,from outside the Screening Chamber with the help of Gas- Cutter Power ,hammer ,hydraulic mobile crane and heavy labour ,stacking the material inside the premises.

Hiring of labour with safety equipment with oxygen mask ,diving suite,ladder hydraulic mobile crane, and mislaneouse T&P like pickaxe, Shovel, hoe etc for filling of silt from Sump and should be disposed of in the area as defined by Engineer –in –charge .(for 12 days )

Hiring Charges of under sewer air lift machine with delivery pipe for Sucking of sand from the suction line and sump.

Hiring charges of air compressor BT-2 (running pressure 4 KG)set with its 25 HP motor for operation of pneumatic air lift machine.

Cutting the M.S. Structure and Screen under hazardous and confine space with the gas cutting set,making arrangement for exhaust of generated toxic gases and deploying ventilation means.Taking out the cut – screen from 20 feet deep Screening chamber deploying heavy labour, hydraulic mobile crane and lowering lifting tools and tackles.(per job )

Hiring of long boom hydra crane with trolley for hanging the trolley in the sump and lifting out floating material in the trolley from the Sump. This includes operator with one helper and all consumables and fuel.

Renovation /Repair of Fabricated mechanical Bar Screens installed at 20/40 MGD Keshopur STP. Arrangement of all safety Equipment for the protection of staff to work in the deep channel and at height, making the working area free from all toxic gases and free from accidents during working at site as per NHRC guidelines.

Providing and fixing of EOT crane of 3 Ton capacity with 3 Phase electric motor, with wire rope of sufficient length. This crane will be work for lifting of bar screen up and down.(DJB approved make)

Replacement of the rusted and damaged electrical Panel Box installed over the Bar Screens with new ones. The job also includes replacement of faulty contractor's and its re-wiring.

Replacement of existing worn out Tin of the roof over the machanical bar screen with new PPGI Sheet for Shed of size of 5 meter x 5 meter.The job also includes dismantling of the existing and depositing the same in the store of the concerned engineer.

Pumping out the complete sewage water from the sump after closing of the Penstock gates of the incoming sewer lines.The job also includes dewatering of the sewage water left out in the bar screen chamber with the help of suitable size of sewage submersible pumps.

Removing of the garbage accumalted in the manual bar screen at inlet chamber (at the depth of 25 feet) with the help of labour equipped with all other miscellaneous T&P like pikage, shovel, hoe etc for removing of the floating material and garbage from the sumps wells. (4 No's in each shift)

Repliring of the rusted and worn out guide channels by welding of MS Channel The job also incudes fixing of fasteners & welding works for smooth movement of screens.

Lifting of the screens from the bottom of the bar screen with the help of chain pulley blocks and labour equipped with the safety equipment.

Repairing of the screens by replacement of the broken, damaged & missing MS Flats of the Screens in proper spacing. The job also includes refixing of the screens with the new SS chain with the help of new SS hook in the guide channels.

Providing and fixing of MS over flow sheet at top level of water level so that the water could not pass by the upper side of the bar screen . The size of sheet will be 1.2 x 2 meter x 6 mm duly welded with guide channels and making proper stengthening for bearable water flow pressure site requirement.

Providing of SS Panji for regular cleaning of the screens.

Replacement of the rusted & weak MS sheet bar or flat of jaal/ railing/ channel bar screen area with new as per the site requirement.

Complete painting work on complete structure of the bar screen , including painting and primer charges by one coat of primer & minimum two coats of required shade & color etc.

Hiring charges or long boom Hydra with operator and fuel .

Hiring charges of undersewer air lift machewith 4 inch delvery pipe for suckng of sludge with suction line from the sump where the bar – Screen Should be rest .

Making of RCC civil foundation with grouting of MS sStud for fixing of vertical I-suction beam also includes the cost of civil material .Fabrication and providing of MS stud of size 300 x 20 mm for grouting in civil foundation fabricated by M.S.road includes the charges of cutting ,grinding .machining and threading

kanha Associates (BID ID -1639191)